Purple Hinged Rock Scallops (Crassadomea gigantea)

  • species range from Baja California to the Gulf of Alaska
  • filter feeders, up to 25 year life-span
  • vulnerable to overfishing
  • no current aquaculture production

Research Questions?

  1. Do external metrics accurately predict internal adductor diameter?
  2. Does adductor diameter change as the scallop matures?

Methods

Collected data from our three grow out sites (Neah Bay, Dabob Bay, and Totten Inlet)

scallop <- read.csv("Rdataformat_03132018.csv") %>% 
  select(Location, sex, mc_1_mode, T2_adductor) %>% 
  setnames(old=c("T2_adductor","mc_1_mode", "sex"), new=c("Adductor   Diameter (mm)", "Maturation Stage", "Sex"))
Location Sex Maturation Stage Adductor Diameter (mm)
DB f 3 23
DB m 2 20
DB m 3 20
DB m 2 22
DB m 2 21
DB f 3 22
DB m 2 20
DB f 1 21
DB m 5 22
DB m 2 13
DB m 5 20
DB f 4 21
DB m 2 22
DB m 2 19
DB m 2 20
DB m 2 19
DB m 2 20
DB m 3 16
DB m 2 20
DB m 2 14
DB m 2 16
DB m 2 17
DB m 2 18
DB m 3 13
DB m 1 22
DB m 2 17
DB m 2 22
DB m 2 21
DB m 2 22
DB m 3 13
DB m 3 19
DB m 3 18
DB m 4 15
DB m 1 23
DB m 3 21
DB f 4 17
DB f 3 13
DB m 3 18
DB m 2 12
DB m 2 22
DB m 2 21
DB m 2 13
DB m 4 20
DB m 2 16
DB m 3 19
DB m 3 18
DB m 3 19
DB m 2 21
DB m 3 15
DB m 3 18
DB m 4 14
DB m 3 18
DB m 3 -
DB m 3 18
DB m 3 18
DB f 3 22
DB m 3 16
DB m 3 17
DB m 3 18
DB m 3 22
DB m 3 18
DB m 3 15
DB m 3 16
DB f 4 21
DB m 2 18
DB f 4 17
DB m 4 15
DB m 2 19
DB m 2 15
DB m 4 16
DB m 4 22
DB f 4 19
DB m 3 15
DB f 2 17
DB m 2 18
DB m 2 22
DB m 2 16
DB m 1 18
DB m 2 23
DB m 2 19
DB f 1 16
DB f 2 21
DB m 1 19
DB m 2 19
DB f 4 17
DB m 2 14
DB m 3 17
DB m 3 19
DB m 2 19
DB m 2 17
DB m 3 13
DB m 3 16
DB m 3 18
DB m 3 15
DB m 3 19
DB m 3 19
DB m 3 18
DB m 3 17
DB m 3 19
DB m 3 21
DB m 2 17
DB m 3 12
DB f 3 16
DB m 3 19
DB m 3 16
DB m 3 19
DB m 3 20
DB f 4 18
DB m 3 15
DB m 3 17
DB m 3 18
DB m 3 17
DB m 3 16
DB m 2 16
DB f 3 16
DB m 3 15
DB m 2 15
DB f 2 17
DB f 2 14
DB m 3 17
DB f 4 15
DB m 4 14
DB m 3 16
DB m 2 14
DB m 2 19
DB f NA 16
DB m 2 15
DB m 2 20
DB m 2 15
DB m 2 19
DB f 4 18
DB m 2 20
DB m 2 17
DB m 3 20
DB m 2 19
DB m 2 21
DB m 2 17
DB m 2 17
DB f 3 15
DB f 3 22
DB f 3 19
DB m 3 24
DB f 3 18
DB m 3 19
DB m 2 19
DB m 3 18
DB m 2 19
DB f 3 17
DB f 3 19
DB m 3 16
DB m 3 21
DB m 3 12
DB f 4 20
DB m 3 22
DB f 3 22
DB f 3 20
DB m 3 20
DB m 3 21
DB f 3 17
DB m 3 17
DB m 3 19
DB m 3 18
DB m 3 19
DB m 3 17
DB m 3 19
DB m 3 21
DB f 3 14
DB m 3 21
DB m 3 16
DB f 4 16
NB f 5 18
NB f 3 26
NB m 2 18
NB m 2 21
NB f 3 25
NB f 3 19
NB f 3 19
NB m 3 19
NB m 2 22
NB m 2 17
NB f 3 19
NB m 3 22
NB m 3 15
NB m 2 20
NB m 3 17
NB m 2 22
NB m 3 20
NB m 2 16
NB m 3 20
NB m 3 23
NB f 3 14
NB m 5 22
NB m 3 15
NB f 4 20
NB m 3 22
NB m 4 16
NB m 3 9
NB m 3 20
NB m 3 16
NB m 1 22
TI m 4 20
TI m 3 21
TI m 3 19
TI m 0 19
TI m 3 21
TI m 3 21
TI m 3 24
TI m 3 17
TI m 2 19
TI m 3 16
TI m 3 18
TI m 3 22
TI f 3 25
TI m 2 17
TI m 2 25
TI m 4 20
TI m 3 11
TI f 4 16
TI m 3 20
TI f 3 22
TI m 3 17
TI m 5 22
TI m 3 19
TI m 2 21
TI f 4 20
TI f 5 19
TI m 3 15
TI m 3 17
TI m 2 21
TI m 3 20
TI m 3 18
TI m 4 18
TI m 3 17
TI m 3 23
TI m 3 20
TI m 2 17
TI m 4 21
TI m 3 16
TI m 3 15
TI m 3 21
TI m 3 21
TI m 2 21
TI f 4 21
TI m 3 17
TI m 3 18
TI m 3 21
TI m 2 17
TI m 3 16
TI f 3 18
TI m 0 20
TI m 3 20
TI m 3 20
TI f 3 11
TI m 1 19
TI m 3 20
TI m 5 17
TI m 3 14
TI f 4 20
TI f 3 19
TI m 2 21
TI m 4 20
TI m 2 21
TI m 1 18
TI m 2 20
TI m 4 18
TI m 2 5
TI m 2 17
TI m 4 17
TI m 2 21
TI m 3 23
TI m 3 17
TI m 2 19
TI m 3 26
TI m 3 14
TI m 4 20
TI m 2 20
TI m 3 20
TI m 3 22
TI m 3 18
TI m 3 19
TI f 4 23
TI m 3 18
TI m 3 21
TI m 3 18
TI m 2 19
TI m 3 20
TI f 4 19
TI f 3 19
TI m 2 17
TI m 3 20
TI f 4 20
TI m 3 20
TI m 2 22
TI f 3 20
TI m 2 24
TI m 3 25
TI f 4 20
TI m 2 20
TI m 3 25
TI f 4 20
TI m 2 21
TI m 1 21
TI m 4 19
TI m 2 22
TI m 5 18
TI m 4 19
TI m 4 20
TI f 3 25
TI m 1 20
TI m 2 18
TI f 4 23
TI m 2 24
TI f 4 22
TI m 2 23
TI f 4 19
TI f 4 20
TI m 1 21
TI m 2 17
TI m 2 17
TI m 2 18
TI m 1 18
TI f 4 17
TI m 1 23
TI m 5 22
TI m 2 21
TI m 2 21
TI f 4 19
TI m 5 22
TI m 2 22
TI m 5 20
TI m 3 20
TI f 3 17
TI f 3 22
TI m 3 20
TI m 3 20
TI m 3 18
TI m 0 19
TI m 3 17
TI m 2 23
TI m 3 23
TI f 3 19
TI m 3 19
TI m 3 18
TI m 3 20
TI m 3 23
TI f 4 17
TI m 1 20
TI m 2 19
TI m 2 18
TI m 3 15
TI m 2 21
TI m 0 17
TI m 3 17
TI f 3 20
TI f 2 20
TI m 3 21
TI m 2 19
TI m 2 17
TI m 5 18
TI m 2 17
TI m 1 18
TI m 2 17
TI m 2 17
TI m 2 19
TI f 4 20
TI f 5 17
TI m 2 20
TI m 2 23
TI m 2 20
TI m 2 23
TI m 2 20
TI m 2 18
TI m 2 20
TI m 2 22
TI m 2 21
TI m 2 22
TI m 1 19
TI m 1 17
TI m 2 15
TI m 2 16
TI f 3 17
TI m 3 19
TI m 3 18
TI f 3 14
TI m 0 23
TI m 4 18
TI m 2 18
TI f 3 25
TI f 4 21
TI m 3 22
TI m 3 19
TI f 3 18
TI m 2 22
TI m 2 20
TI f 3 9
TI m 5 20
TI m 2 16
TI m 3 13
TI m 2 15

Methods

Gonad tissue samples were collected and histology slides were prepared to rate maturation stages of each individual scallop.

24 acini were rated for each individual and the mode across all 24 acini determined overall maturation stage for the organism.

Results

  • External metrics were significant (p-value<0.001) in determining internal adductor diameter.
  • Correlation values 0.59-0.6

Results

There was no significant relatioship between adductor diameter and gonad maturation stage.

Tidyr

temp_t <- read.csv("full_temp.csv") %>% 
 separate( Date, into = c("month", "year"), sep = " ") 
Location month year average_temp
NB October 2016 54.14700
NB November 2016 53.98147
NB December 2016 47.97732
NB January 2017 45.27513
NB February 2017 45.89529
NB March 2017 47.41865
NB April 2017 49.87727
NB May 2017 50.65090
NB June 2017 66.49760
TI October 2016 56.11100
TI November 2016 54.37777
TI December 2016 47.49610
TI January 2017 44.20642
TI February 2017 45.26014
TI March 2017 47.10169
TI April 2017 50.45440
TI May 2017 55.06003
TI June 2017 63.06293
DB November 2016 51.96230
DB December 2016 46.96194
DB January 2017 47.61210
DB February 2017 46.45214
DB March 2017 47.28266
DB April 2017 50.22193
DB May 2017 53.81600
DB June 2017 61.91673